The Influence of Stabilization under Various Conditions and Subsequent Treatment of Polyester Fabric on the Quantity and Composition of Extracted Oligomers

Abstract

The study examined the effect of stabilization under various conditions (temperature, time and tension) and the treatment of polyester fabric in buffered solution (pH 12) prior to high-temperature dyeing, on the migration of oligomers. The content of oligomers in the treated polyester fabric was determined by extraction in petroleum ether and dichloromethane. The extract was analyzed using gel permeation chromatography (GPC). Based on the results it was established that oligomer migration was affected by temperature, time, and the stabilization tension. The greatest reduction in the content of oligomers was in polyester fabric that was stabilized in a restricted state at higher temperatures and longer times (220°C, 600 seconds). The oligomer content decreased even further if the polyester fabric was alkaline pre-treated. The GPC chromatograms showed that all oligomeric extracts consisted mainly of cyclic trimers, whereas the presence and proportion of other cyclic oligomers varied with treatment conditions.

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